diff --git a/test/plugins/v0_1_0/aws/cloudformation/test_utils.py b/test/plugins/v0_1_0/aws/cloudformation/test_utils.py
index 3bc63a85..44d5eeff 100644
--- a/test/plugins/v0_1_0/aws/cloudformation/test_utils.py
+++ b/test/plugins/v0_1_0/aws/cloudformation/test_utils.py
@@ -17,7 +17,7 @@ def mock_cloudformation_client():
 
 @pytest.mark.asyncio
 async def test_create_stack_set_raise_exception(mock_cloudformation_client, mocker):
-    client = boto3.client("cloudformation")
+    client = boto3.client("cloudformation", region_name="us-east-1")
     mock = mocker.patch(
         "iambic.plugins.v0_1_0.aws.cloud_formation.utils.boto_crud_call"
     )